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Let us first talk about the principle of analog monitoring: simply by the camera (front-end) through the transmission device to the back-end storage (DVR or monitoring host) for video and real-time preview. Therefore, we can start from these parts.
Elevator simulation wireless monitoring necessary tools: screwdriver, pliers, multimeter, measuring instrument, engineering treasure and so on.
First, check whether the back-end video capture card or hard disk recorder has loose interfaces and whether the power supply is normal. If everything is normal, you need to go to the front end to check if the camera power and the camera are working properly.
Surveillance cameras have no video signal. First check if there is any problem with the power supply of the camera. Use a multimeter to check whether the 12V output voltage is normal. If it is normal, continue troubleshooting other fault points. If it is not normal, replace the 12V power supply and do another test.
After checking the camera power problem, and then detect whether the camera is faulty, you can use the engineering treasure to directly detect whether the camera has an image. If there is no image, the camera is proved to be faulty. If the image is normal, the camera is proved to be normal, and then the test is used to connect. The line is normal.
Monitoring faults is a relatively tedious project. There are many causes of no image faults. You should check them one by one. You must be careful in the troubleshooting process. Otherwise, the root cause of the fault may not be found.
Now many districts, properties, and elevators in supermarkets have installed video surveillance. Due to the inconvenience of wiring, more and more wireless monitoring systems have entered elevators. Although analog wireless monitoring is used less and less, in some places, it is modified through wired monitoring. The original whole system is analog, so analog wireless monitoring still occupies a certain market. The analog monitoring system in the elevator will cause some problems due to many reasons. In particular, customers who have just used wireless monitoring will think that the problem is transmission equipment, and they will be in a hurry, and the intermediate transmission equipment will bear the brunt of it. Accusation.
September 05, 2024